What causes heartworm disease?
Heartworm disease or dirofilariasis is a serious and potentially fatal disease. It is caused by a blood-borne parasite known as Dirofilaria immitis.
Adult heartworms are found in the heart and adjacent large blood vessels of infected dogs. Rarely, worms may be found in other parts of the circulatory system. The female worm is 6 - 14" long (15 - 36cm) and 1/8" wide (5mm). The male is about half the size of the female. One dog may have as many as 300 worms present when diagnose... Read More
Dr. Utchen, my dog coughs a lot, but seems fine otherwise. The vet says he has chronic bronchitis and that it might be from an allergy. She says he’ll probably always need medication for this. Why can’t this be cured like when people get bronchitis?
Answer: Chronic bronchitis and allergic bronchitis are basically the same thing—chronic means it’s been going on a long time and isn’t really changing very quickly, and allergic means it’s due to some kind of environmental allergy, like pollen, dust mites, molds, etc.
Chronic bronchitis is usually due to some degree of allergy in the first place, although once i... Read More